Materials Strength Properties under Dynamic Loading

摘要

An experimental technique for evaluating a material's response to dynamic loading has been developed, which is particularly applicable to metals exhibiting a two wave structure in the region from ten to twenty kilobars of compressive stress. The technique included the development of a thin flyer type projectile to produce finite duration pulses which could be controlled for each test. Although the technique was fairly simple to employ, it yielded an accurate means of studying the series of states along a shock's compressive and unloading fronts, as well as giving a peak state which might be used in a peak states dynamic relationship. One continuous record of stress as a function of time at a given distance through the sample material and the material's initial density are all the information necessary to obtain these relationships, as they were derived from interpretive analysis of the waveform. (Author)